SIMBAD references

2001ApJ...562L..71S - Astrophys. J., 562, L71-L74 (2001/November-3)

A burst from the direction of UZ Fornacis with XMM-newton.

STILL M. and MUKAI K.

Abstract (from CDS):

The XMM-Newton pointing toward the magnetic cataclysmic variable UZ For finds the source to be a factor of greater than 103 fainter than previous EXOSAT and ROSAT observations. The source was not detected for the majority of a 22 ks exposure with the European Photon Imaging Cameras, suggesting that the accretion rate either decreased or stopped altogether. However, a 1.1 ks burst was detected from UZ For during the observation. Spectral fits favor optically thin, kT=4.4+7.6–1.8 keV thermal emission. Detection of the burst by the onboard Optical Monitor indicates that this was most probably an accretion event. The 0.1-10 keV luminosity of 2.1+0.6–0.3x1030 ergs.s–1 is typical for accretion shock emission from high-state polars and would result from the potential energy release of ∼1016 g of gas. There is no significant soft excess due to reprocessing in the white dwarf atmosphere.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - Stars: Novae, Cataclysmic Variables - Stars: Individual: Constellation Name: UZ Fornacis - Stars: Magnetic Fields - Stars: White Dwarfs - X-Rays: Binaries

Simbad objects: 2

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